Emulsifier



April 26 1927. Z?

, D. WARREN EMuLsIFlER Filed han. 10, 1924 DAVIS WRREN, O1? LEWISTON. MAINE.

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Application niet). January A10, 1924. Serial No. 685,467.

This invention relates to an einulsier for use in themanui'acture of sizing used for giving stability and' tinish to paper during the process of making the same.

"ln. making sizing it is necessary to thorough'lv,v mix-resin soap. soda ash and silicate of soda. These ingredients must be mixed rapidly and thoroughly as otherwiseparticles otrosin Will pass along into-'the pulp during the paper manufacture and will clog the Wireso'i' the machine with the result that the finish of the paper produced is far from satisfactory.

lt is an object of the present invention to provide a means whereby the ingredients makingl up` the sizing can be thoroughly and practically instantaneously mixed With out the use of stirring, churning, or like mechanisms.

VJ ith the foregoing and other objectsin View which Will appear as the description proceeds, the invention resides in the com bination andarrangement of parts and in the details 'o construction hereinafter described and claimed, it being understood that changes in the precise embodiment ot the invention herein disclosed `may be made Within the scope of what is claimed Without departing from the spiritof the invention.

1n the accompanying drawings the preerred form of the invention has been shown.

1n said drawings Figure 1 is a longitudinal Section through the device constituting the present inven i vot the cylinder is reduced as at 6 and merges into the lirst of a series of substantially spherical casings 7, 8 and 9 respectively; These casings are formed with substantially spherical chambers 10, 11 and 12 respectively. the chambers 10 und ll being connected by au opening 13, the wall of which is .screw threaded while another opening 14 connects the chambers 11 and l2 and also has a screw threaded Wall. An opening 15 having a screw threaded Wall is formed in the outer end of the casing 9 andthe ChamL an enlarged section on line 22,`

bei' l0 communicates with the chamber 2 through 'a passage 16 counter-bored to provide a shoulder 17. Openings 18, 19 and 2() are provided in the walls of the casings 7, '50

8 and 9 respectively and are adapted to re ceive thc ends of supply pipes. notshown.

Screwed into the opening 13 is one end of a tubular conductor 21 having an annular flange bearing against the shoulder 17 and '65 holding the conductor properly centered within the passage 1G, there being an annular series of apertures 23'in the ange Whereby communication is established between the chamber 10 and the chamber 2.

Une end of the conductor 21 projects into the chamber 11 and the passage through the conductor is flared at said end as shown at 24 so as to receive the tapered end 25 o a A tubular nozzle 26. This nozzle is screwed into the opening 111 so as to be supported centrally Within the casing 8, the tapered end of the nozzle being spaced from the conn ductor 21 so Vthat an annular opening is 'left between the Anozzle and the conductor through which the contents of chamber 11|. can flow into conductor 21. One end ot the nozzle projects into the chamber 12 and the passage through the nozzle is tiered at, said end as shown at 27. Projecting close to this @ff llared end of the passage is the tapered end I 28 otanother nozzle 29 which is screwed into the opening 15 and has one lend projecting outwardly from casing 9 asshown at 30 Where it is provided with a suitable coupling 9o 3 1 for connecting it toa steam supply pipe. Supported in any suitable manner Within the chamber v2 is a spindle 32 carrying spiral blades 33 extending tothe Wall ofthe-cylindrical casing 1 and held .against rotationuin mi y any suitable manner. That end of the spindle nearest the passage 16 is preferably tape ed as shown at 34.

Ahe inlet 2O is adapted to be connected to a pipe not shown to the structure. The inlet 19 is vadapted to be connected to a pipe used for conducting a solution of rosin soap and sodaash to the apparatus. Inlet 18 is employed for oonducting silicate of soda to'the apparatus. X05y An opening 35 is formed in the casing 1 to receive a thermometer. Y

ln using the apparatus livevsteam ofabout lbs. pressureor more is directed into the nozzle 29 and the jet thus directed into 116 the nozzle 2G Will set up a suction through the chamberz12 so that cold Water directed` for conducting cold-Water 'mt g5 i Leeaeer into said chamber will be drawn into the nozzle 26 where it Willbe thoroughly mixed with the live steam. This mixture of steam and water is then expelled in the forni of a jet into the conductor 21 and Will set up a' suction through the chamber' l so as to draw into said conductor the mixture of rosin soap and soda ash. The mixed ingredients will thus be propelled through the conductor 2l into the easing ll, thereby setting up a suction through the openings 23 and drawing silicate soda into the casing l from the chamber l0. The several ingredientsgvill he given a swirling action by the spiral blades 33 and will be expelled. from the emulsificr in a thoroughly mixed condition so that the sizing can be used eilieiently in the manufacture of paper without danger of producing defects such as would result froinelow mixing.

lft is to, he ilnilei'etood that the device can he made of different sizes and proportions.

lt has been found in practice that the sWirl ing action and high velocitytdule to the use of live steam and the spiral hladesorill ei'ect a/very thorough mixing of the ingredients and importance 1s .also attached to the fact that the ingredients are not all admitted at one point but are successively introduced as described.

It will of course be understood that when the mixture passes out of the emulsiier at 5 it will be directed into a tank from which it will be drawn into 'the beaters commonly employed. Y

For the pur ose of facilitating the action of the einulsi ier the spiral blades 33am formed in their peripheries with V-shaped notches 36. As the blades Vdo not rotate Within the chan'iber 2 of the emulisfier the liquid will be forcedthrough these V-shaped notches or openings thereby producing a better mixing action than wouldl otherwise be possible.4

What is claimed isz- An emulsifier of the classdescribed in vinding a mixing chamber havin an inlet and an outlet in the respective en s thereof, a non-rotatable Spindle extending longitudinally within said chamber and having a tapered end terminating close to the center ol' the inlet, a :spiral blade ixedly mounted on the spindle and attached to the Wall of the-mixing chamber to provide a spiral passage extending around the spindle from the inlet to the outlet, there being angular notches in the peripheral portion of the spiral blade, and means for feeding material under pressure through the inlet and against the tapered end ofthe spindle, said tapered end constituting a spreader for the material. In testimony that claim the foregoing as my own, I have hereto aliixed my signa ture.

DAVD WARREN. 

